Triangle Contracting, LLC

Frederick, MD

Company facts

Self-certified in SAM.gov: Self Certified Small Disadvantaged Business

For Profit Organization

Subchapter S Corporation
Entity structure: Corporate Entity (Not Tax Exempt)
Other NAICS codes in SAM.gov: 237110 Water and Sewer Line and Related Structures Construction

237310 Highway, Street, and Bridge Construction

237990 Other Heavy and Civil Engineering Construction

238990 All Other Specialty Trade Contractors
SAM.gov registration date: Dec 22, 2015
Physical address: 313 E 4th St, Frederick, MD 21701, USA
Website: trianglecontracting.com
Founded: 2012
Employees: 11-50
Estimated annual revenue: $1M-$10M
Industry: Industrials

Capital Goods

Construction & Engineering
SIC code: 87 Engineering & Management Services
Profiles: LinkedIn

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Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated Dec 9, 2025.

Prime contractor	Prime award	Amount	Awarded
Kian International Inc. INSTALL A RETENTION POND IN ACCORDANCE WITH MS4 Bioretention Basin/MS-4 Compliance	70FA2023C00000006	$1,854,250	Sep 11, 2023

Vendor	Location	Primary NAICS
Two Alpha Contracting LLC UEI E8CFUWP7XVA4	Wright City, MO	238990 All Other Specialty Trade Contractors
Brightwater Solutions, LLC UEI ZLLEFUJKWHC3	St. Petersburg, FL	541620 Environmental Consulting Services
Southern Site & Utility Design, Inc. UEI NCKTAZ5F58L8	Milton, FL	541330 Engineering Services
Petrodesignbuild UEI FFAZW4WL7CL4	Upper Marlboro, MD	115112 Soil Preparation, Planting, and Cultivating
Ironwood Construction & Engineering, LLC UEI DPBCBVUU8DS8	Crossville, TN	237110 Water and Sewer Line and Related Structures Construction

From the vendor's SBA profile

Specializing in storm water treatment and management, environmental restoration projects and site grading

Yes. Triangle Contracting, LLC's SAM.gov registration is active through December 5, 2026.

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